天山雪莲花(4)

【化学成份】
1．全草含具药理活性的多糖,平均分子量16000,系由葡萄糖(glucose),阿拉伯糖( arabinose),鼠李糖(rhamnose)和半乳糖(galactose)按摩尔比 1：2.l：l.3：3.9所组成。还含倍半萜内酯成分：愈创木内酯(guaianolide),愈创木内酯-β-葡萄糖甙(guaianolide-β-glucoside),雪莲内酯(xuelian-lactone),大苞雪莲内酯(involucratolactone),大苞雪莲内酯-8-β-D-葡萄糖甙(involucratolactone-8-β-D-glucoside),去氢木香内酯(dehydrocostuslactone),二氢去氢木香内酯(dihydrodehy-drocostuslactone),8α-羟基-11βH-11,13-二氢去氢木香内酯( 8α-hydroxy-llβH-11,13-dihydrodehydrocostuslactone),3α-羟基-11βH-11,13-二氢去氢木香内酯-8-O-β-D-葡萄糖甙(3α-hydroxy-11βH-11,13-dihydrodehydrocostuslactone-8-O-β-D-glucoside),3α,8α-二羟基-11βH-11,13-二氢去氢木香内酯 (3α,8α-dihydroxy-llβH-11,13-ihydrodehydrocostuslactone),llβH-11,13-二氢去氢木香内酯一8-O-β-D-葡萄糖甙(11βH-11,13-dihydrodehydrocostu-slactone-8-O-β-D-glucoside),8α-丙酰氧基去氢木香内酯(8α-propionyloxy-dehydrocostuslactone),洋蓟苦素(cynaropicrin),11α,13-二氢洋蓟苦素(1lα,13-dihydrocynaropicrin),1lα,13-二氢去酰洋蓟苦素-(4-羟基巴豆酸酯)[1lα,13-dihydrodesacylcynaropi-crin(4-hydroxytiglate)],伽氏矢车菊素(janerin),19-去氧伽氏矢车菊素(19-deoxyjanerin),去酰伽氏矢车菊素(desacyljanerin),伽氏矢车菊素-(4-羟基巴豆酸酯)[janerin-(4-hydroxytiglate)],11α,13-二氢伽氏矢车菊素(1lα,13-dihydrojanerin),11α,13-二氢去酰伽氏矢车菊素-(4-羟基巴豆酸酯)[11α,13-dihydrode-sacylianerin-(4-hydroxytiglate),11α,13-二氢去酰洋蓟苦素(11α,13-dihydrodesacylcynaropi crin)。